From nobody Wed Nov 27 08:33:12 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1700032937; cv=none; d=zohomail.com; s=zohoarc; b=PU74Qvfjfp+VS5w/aL+YmVJiJX/K+teleR2Hd13oKIRZFq2JrcsADO2mxS1bQlWgMeU38ZWT+Twz/fxwppSj78gnSQVxkEreaOcqK3exkHPBBNFhtgyvq+dbJ1ZSKhQqGL7SxBXwdHcoR3l4iwPraYdxZEFQpEvOavYFLuzTQz4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1700032937; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=/rwz6v5b2JqlTDjxkGuXngtyDe/rVBu6DhvDxWL2foc=; b=D05/PbvtrM2Tkd7IhkEx6dObriTZr3tUrjeYFbhFacZwPG7vPkX6avtYzwvo2B5WfLnOUkVl1zunMY9f5G9SS5dS9fBxaIXHW/kcNrAYYGR/D/Aiz3tc0Pna+qieZpre+V513CHocAwzWc+PMX9J94KnvwcdY27D2emyYgv7Pkk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1700032937271986.5538105824822; Tue, 14 Nov 2023 23:22:17 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r3ADw-0005xO-96; Wed, 15 Nov 2023 02:22:08 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r3ADq-0005jI-9x for qemu-devel@nongnu.org; Wed, 15 Nov 2023 02:22:03 -0500 Received: from mgamail.intel.com ([192.55.52.115]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r3ADo-0005ES-0l for qemu-devel@nongnu.org; Wed, 15 Nov 2023 02:22:01 -0500 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Nov 2023 23:21:57 -0800 Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orsmga003.jf.intel.com with ESMTP; 14 Nov 2023 23:21:51 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1700032919; x=1731568919; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=5u+WKJc4+yttRr+qCCOD151Jg4QmLt+f0sR3Wiffs48=; b=XD0OoJ4VAOTq5fT3flepPId5p/I+EZyjFpfLWwvEpQqxmPMWDNSyFm3r E0W+t7jO6fLV284B0D7PG3wHxF9CUgG3KETzGa0suimDfcW798zT9lIis w7k9NDZTdHVaG35bKJFuqU/oc2g4Xykdk721Zdp8kr4/ktanF/VPoI55M a/o8D+sYRYARh5DXfEq2tXb41QuGEIuu8rKMHtooRKfd1pNl6cZ0YRL1e 6/z/581zFecWoNfA/ifIhThUyOzoXxtqG4g6JlDszGT+1kBohmF+XkIpr h4Er5yF5hvRkEvjyBpLrOYB9vUY5GZnf60TccWq8wp/AMSP/eyEQwtkFA g==; X-IronPort-AV: E=McAfee;i="6600,9927,10894"; a="390623342" X-IronPort-AV: E=Sophos;i="6.03,304,1694761200"; d="scan'208";a="390623342" X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10894"; a="714800116" X-IronPort-AV: E=Sophos;i="6.03,304,1694761200"; d="scan'208";a="714800116" From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , "Michael S . Tsirkin" , Marcel Apfelbaum , Richard Henderson , Peter Xu , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Cornelia Huck , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, xiaoyao.li@intel.com, Michael Roth , Sean Christopherson , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang Subject: [PATCH v3 47/70] memory: Introduce memory_region_init_ram_guest_memfd() Date: Wed, 15 Nov 2023 02:14:56 -0500 Message-Id: <20231115071519.2864957-48-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231115071519.2864957-1-xiaoyao.li@intel.com> References: <20231115071519.2864957-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=192.55.52.115; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.999, HK_RANDOM_FROM=0.999, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1700032938580100001 Content-Type: text/plain; charset="utf-8" Introduce memory_region_init_ram_guest_memfd() to allocate private guset memfd on the MemoryRegion initialization. It's for the use case of TDVF, which must be private on TDX case. Signed-off-by: Xiaoyao Li --- include/exec/memory.h | 6 ++++++ system/memory.c | 27 +++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index c8b0385b19ad..ca23a1a6b336 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -1590,6 +1590,12 @@ void memory_region_init_ram(MemoryRegion *mr, uint64_t size, Error **errp); =20 +void memory_region_init_ram_guest_memfd(MemoryRegion *mr, + Object *owner, + const char *name, + uint64_t size, + Error **errp); + /** * memory_region_init_rom: Initialize a ROM memory region. * diff --git a/system/memory.c b/system/memory.c index b0c58232b6f7..166eb9fd6f7d 100644 --- a/system/memory.c +++ b/system/memory.c @@ -3632,6 +3632,33 @@ void memory_region_init_ram(MemoryRegion *mr, vmstate_register_ram(mr, owner_dev); } =20 +void memory_region_init_ram_guest_memfd(MemoryRegion *mr, + Object *owner, + const char *name, + uint64_t size, + Error **errp) +{ + DeviceState *owner_dev; + Error *err =3D NULL; + + memory_region_init_ram_flags_nomigrate(mr, owner, name, size, + RAM_GUEST_MEMFD, &err); + if (err) { + error_propagate(errp, err); + return; + } + memory_region_set_default_private(mr); + + /* This will assert if owner is neither NULL nor a DeviceState. + * We only want the owner here for the purposes of defining a + * unique name for migration. TODO: Ideally we should implement + * a naming scheme for Objects which are not DeviceStates, in + * which case we can relax this restriction. + */ + owner_dev =3D DEVICE(owner); + vmstate_register_ram(mr, owner_dev); +} + void memory_region_init_rom(MemoryRegion *mr, Object *owner, const char *name, --=20 2.34.1